Ruler ++ vs Smart Level & AR Ruler
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ruler ++
This app allows you to measure lengths accurately in both inches and centimeters. It provides a simple and straightforward tool for quick measurements.
- Measure in inches
- Measure in centimeters
- Accurate length measurement
- Simple interface
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Measure length in inches and cm.
Smart Level & AR Ruler
Transform your iPhone into a versatile digital toolbox with advanced AR and AI. Measure length, area, height, and distance with precision, or utilize tools like a protractor, level, and unit converter. This app offers a comprehensive suite of utilities for various tasks.
- Length, Area, Height, Distance Measurement
- Protractor and Unit Conversion
- Level and Light Sensor
- Scientific Calculator
- Magnifying Glass and Compass
- Flashlight
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Put your tools in your pocket! An iPhone can help you complete various complex scenes! Best of all, there are no limits! Users in more than 20 countries and regions around the world use our measurement tools to get their work done. Tools and features include: • Length measurement • Area measurement • Height measurement • Distance measurement • Protractor • Unit conversion • Level • Light sensor • Screen calibration • Decibel meter • Scientific computers • Magnifying glass • Compass • Flashlight • More exciting Measure any object with precision. Advanced AI and computer vision technologies turn your iPhone into a portable digital toolbox. Notice: If you subscribe through Apple, payment will be charged to your App Store Account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. The cost of renewal will be charged to your account at the price of the chosen plan within 24 hours prior to the end of the current subscription period. Subscriptions and auto-renewal can be managed by going to your App Store Account Settings after purchase. Privacy Policy: https://sites.google.com/view/privacypolicy-tool Terms: https://sites.google.com/view/terms-tool
Screenshots
Verdict
The clearest difference is review sentiment: Smart Level & AR Ruler at 83% against Ruler ++'s 15%. Smart Level & AR Ruler also leads on rating (4.7 vs 3.5) and update cadence (every 2 weeks vs every 5 months). Ruler ++'s advantage is iOS requirement (8.0 vs 15.6). On price, ratings volume, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Ruler ++ sells 1 one-off in-app purchase and Smart Level & AR Ruler sells 4 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Smart Level & AR Ruler holds the better App Store score, 4.7 against 3.5. Both are backed by a comparable volume of ratings — 954 and 485 respectively. Written reviews point the same way: 15% of Ruler ++'s written reviews are positive against 83% of Smart Level & AR Ruler's.
Ruler ++ ships an update every 5 months, Smart Level & AR Ruler every 2 weeks. The most recent releases landed on November 10, 2026 and November 8, 2026 respectively.
| Parameter | Ruler ++ | Smart Level & AR Ruler |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (954 ratings) | 4.7 (485 ratings) — better |
| Positive reviews | 14.9% of reviews | 83.3% of reviews — better |
| Number of ratings | 954 — better | 485 |
| Update frequency | Every 5 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 8.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 17 MB | 43 MB |
| Age rating | 4+ | +4 |
| Developer | Fapps World et Cie S.E.C.S. | 卓 张 |
Customer experience
Ruler ++
Smart Level & AR Ruler
Bugs and requests
Ruler ++
Reported bugs
3 issues- Ruler markings are incorrect
- Ruler not displaying full length on screen
- Incompatible with newer iPhone models
Requested features
3 requests- Add ability to calibrate ruler for different devices
- Improve accuracy of measurements
- Reduce or remove ads
Smart Level & AR Ruler
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Ruler ++
- Advertisement-free upgrade$0.99
Smart Level & AR Ruler
- Weekly Subscription$4.997 Days
- VIP - Week3 Days trial$9.997 Days
- Monthly Subscription3 Days trial$19.991 Month
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- VIP - Year3 Days trial$69.991 Year
Questions
Is Ruler ++ free?
Is Smart Level & AR Ruler free?
Which has better reviews, Ruler ++ or Smart Level & AR Ruler?
Do Ruler ++ or Smart Level & AR Ruler have ads?
Which is updated more often, Ruler ++ or Smart Level & AR Ruler?
Other comparisons
